Grout is no used between countertop and wall tile.
Large gap between tile and wall.
This small gap is created by the compressed thickness of the organic mastic or the cement thinset used to attach the tile to the backer board.
Fill larger gaps with foam backer rod sometimes called spline.
A pencil tile trim would cover the gap.
Get photos of great finish details include photos with bid and contract.
Instead fill it with an elastic material capable of sustaining the movement of the floor and the movement of the wall.
Any gap should never be greater than 1 8 inch.
Also check concrete supply centers as backer rod is used to fill gaps in poured concrete walls.
Large gap between tub and tile 1 2 how to caulk.
Push the appropriate size backer rod into the gap below flush with the surface.
Ceramic tile wall gap back of tile should rest on finished wall.
Caulk normally used would not work because it s too large a gap.
Thread tools search this thread 1 01 27 16 09 51 am b.
Big box stores have them.
Never fill this gap with grout because tile grout is not flexible.
Fill gaps larger than 1 8 inch.
Backer rod and caulking masking tape off the wall and tub to pull a straight line.
If you have tile on the wall adjoining the tub select a caulk that matches the color of the grout.
If your gap is smaller than 1 8 inch in width use regular caulk.
Caulking is the best choice for this application.
This can be found at well stocked hardware stores but not always at large home improvement centers.